Vaccinium exaristatum Kurz, J. Asiat. Soc. Bengal 42(2): 86 1873. (syn: Vaccinium apricum H.R.Fletcher; Vaccinium garrettii Craib; Vaccinium longetubulosum J.J.Sm.; Vaccinium winitii H.R.Fletcher);
Assam to China (S. Yunnan, S. Guizhou, W. Guangxi) and Indo-China: Assam, China South-Central, China Southeast, Laos, Myanmar, Thailand, Vietnam as per POWO;

MS,Nov.,2021/62 Vaccinium sp. ? for id.: 4 images- 1 very high res.
Location : Khawbung
Date : 07-04-2017
Habit : Small tree
Habitat : Wild

Vaccinium sprengelii (G.Don) Sleumer ??

Maybe Vaccinium sprengelii as suggested by … as per Qsbg
What are the keys?

It is Vaccinium exaristatum Kurz

Myself and Dr. M. SANJAPPA (Former Director of BSI) reported from India as New record, from Gwaltabi of Manipur in 2007 in BNHS, but I collected it in March 2003.
It is common locality wise, not available everywhere of its natural habitat

V. exaristatum has two colour variants, white and pinkish purple and also in between them.

It is also collected from Mizoram and Nagaland




References: POWO  Catalogue of Life  The Plant List Ver.1.1  Tropicos  IPNI  GBIF (High resolution specimens) Flora of China  Research gate